fix compiled output efficiency regression

fix constexpr bug for README hello world under clang

now there is a helpful example

first usable beta release

pre-release to Github Actions release process

Testing github release notes.

prerelease of cib. documentation, doxygen, and comments need to be wr…

…itten.

initial prerelease

prerelease of cib, API is subject to change

Prerelease to test CI/CD flows.